docs: bootstrap tutor planning

openspec/changes/bootstrap-job-tutor-platform/specs/learner-memory/spec.md

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+# learner-memory Specification
+
+## ADDED Requirements
+
+### Requirement: Durable learner memory is structured and evidence-backed
+
+The system SHALL store durable learner memory as structured learning state
+rather than an untyped RAG transcript.
+
+#### Scenario: answer grading updates concept mastery
+
+- **GIVEN** a user answers a technical interview question
+- **WHEN** the answer is graded
+- **THEN** the system may update concept mastery
+- **AND** the update includes the original answer or grading evidence.
+
+#### Scenario: repeated mistakes become misconceptions
+
+- **GIVEN** the same reasoning error appears across multiple answers
+- **WHEN** the memory extraction workflow runs
+- **THEN** the system records or strengthens a misconception entry
+- **AND** links it to the supporting answers.
+
+### Requirement: Temporary context does not become durable truth automatically
+
+The system SHALL separate session context from durable learner memory.
+
+#### Scenario: inferred memory requires evidence
+
+- **GIVEN** a tutor infers that a learner may misunderstand a concept
+- **WHEN** the inference lacks enough evidence
+- **THEN** the system records it as tentative or ignores it
+- **AND** does not promote it to durable mastery state as confirmed truth.